Apparatus for boring wells.



No. 769,371. A v iATENTED SEPT; 6, 1904. J. 0. ADKINS. 1

APPARATUS FOR BORING WELLS APPLICATION FILED APR. 11. 1904;

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K 5 1 81 11x I/ I] H 1 ,I 5! ll v vn?! y- O Hui la. m 5 I?) 5 my wmm I nSWMM Q A? @mmw 3 mkfm' g A5 6W UNITED STATES Patented September 6, 1904.

PATENT OF ICE.

JOHN G. ADKINS, or STOCKTON, cALIEoENIA.

, APPARATUS FOR BORING WELLS.

SPECIFICATION forming part of Letters Patent No. 769,371, datedSeptember 6, 1904.

Application filed April 11, 1904.

To all whom, it may concern:

Be it known that I, J OHN C. ADKINs, a citizen of the United States,residing at Stockton,

. ings, and to the numerals of reference marked thereon, which formapart of thisspecification.

My invention relates to improvements in apparatus for boring wells, andparticularly to that class designated as reamersf and it consists in theeffective construction hereinafter set forth. g

My object is to produce a reamer which will sufliciently ream and.clearthehole, so that the casing may beeasily inserted without a wasteof energy or without reduction in size. This object I accomplish by thepeculiar con-' struction and adaptation of parts fully set forth in thisspecification and particularly pointed out in the claims appended.

In order that my invention may be readily understood and easily carriedinto efiect, I will proceed, aided by the accompanying drawings, fullyto describe the same.

Referring to the drawings, Figure 1 is a longitudinal sectional view ofmy improved reamer. Fig. 2 is a bottomplan View of the same.

Similar numerals of reference indicate corresponding parts in bothviews.

1 designates the casing of my improved reamer.

1 is an ordinary bail riveted to the casing-1.

1 is a cable attached to same.

2 designates slots of suitable length and width out near the bottom ofthe casing 1 at points equidistant from each other. I

8 designates steel springs riveted to the cas: ing 1 in the top thereof.Said springs bend inwardly into inverted-L shapes at the bottom of thecasing. There is one spring 8 to each slot 2, and said springs fit oversaid slots.

4 designates steel blocks fitted into the slots Serial No. 202,485. (Nomodel.)

2 and riveted to the springs 3.' Said blocks extend a suitable distancewithin the casing l. 5 designates steel springs riveted to the blocks 4within and extending upward in the 8 is a piece of cast-iron exactlyfitted into.

the casing 4 and surrounding the pin 7 and resting on the key 6. 9 is acap screwed onto the top of the pin 7, adapted to hold the part 8 inposition.

10 is an eye-screw tapped into the top of the part 8. 11 is a cableattached thereto.

12 designates chisels riveted 'to the inverted L of the steel springs 3by means of rivets .13. Said chisels follow the circumference of thecasing 1.

Theoperation is as follows: Thecable 11 is held taut while the reamerfollows the casing of the well down until it strikes the bottom. Thenthe cable 11 is loosened and the jar of the reamer striking the bottomcauses the reamer is then pulled upward by means of the cable 1 Thesprings 3 spring the parts 4: and 5 back in position, and the key 6,fitting between the springs 5, holds said parts in posi-' tion, and thereamer is ready for another drive.

Although I have shown a certain kind of mechanism for spreading thespring-chisel mechanism, still any which is adaptable may be used. 7

I have shown four of the slots 2and the corresponding parts. Any numberdesired, however, may be used.

I have entered into a detailed description of the construction andrelative arrangement of parts embraced in the present and preferredembodiment of. my invention. I do not desire, however, to be understoodas confining myself to such specific detail, assuch changes andmodifications may be made in practice as fairly fall within the scope ofmy claims.

Having thus described my invention, what Iclaim as new and useful, anddesire to protect by Letters Patent, is

1. In an apparatus of the kind described the combination of a suitablecasing provided with a plurality of vertical slots near the bottomthereof, steel springs riveted to the outside top of said casing andextending downwardly over said slots, said springs being bent inwardlyinto inverted-L shapes at the bottom of said, casing, steel blocksriveted to said springs and extending a suitable distance through saidslots, steel springs riveted to said blocks inside the said casing andextending a suitable distance upward therein. a suitable driving-keymechanism fitted between and above said last-named springs, and suitablechisels fastened to the inverted-L shapes on the first-named springs,all for the purpose set forth.

2. In an apparatus of the kind described the combination of acylindrical casing having a plurality of vertical slots near the bottomthereof, a spring-chisel mechanism fastened to said casing and acting insaid slots, chisels carried by said mechanism and suitable means withinsaid casing for operating said chisel mechanism, all as set forth.

8. In an apparatus of the kind described the combination of a suitablecylindrical shell, a spring-chisel mechanism fastened to said shell,downwardly-extending chisels carried by said mechanism, and means forflaring and retracting said mechanism, all for the purpose set forth.

4. In an apparatus of the kind described the combination of a suitableshell, a suitable key within said shell, a suitable pin screwed into thehead of said key, a piece of east-iron surrounding said pin and restingon said key, a cap screwed onto the top of said pin and adapted to holdsaid piece of cast-iron in position, an eye-screw tapped into the top ofsaid piece of cast-iron, a cable attached thereto, and a suitablespring-chisel apparatus attached to said casing and regulated by saidkey, all as set forth.

5. In an apparatus of the kind described the combination of asuitablecasing provided with a plurality of vertical slots near the bottomthereof, steel springs riveted to the outside top of said casing andextending downwardly over said slots, said springs being bent inwardlyinto inverted-L shapes at the bottom of said casing, suitable chiselsfastened to the inverted-L shapes on the springs, steel blocks fastenedto said springs and extending a suitable distance through said slots,steel springs fastened to said blocks inside of the said casing andextending a suitable distance upward therein, a suitable driving-keyfitted between said last-named springs, a pin fastened into the top ofsaid key, a piece of cast-iron surrounding said pin, a cap on the top ofsaid pin adapted to hold said cast-iron in position, and means forraising said casing and said key, pin, and iron, all as set forth.

6. A reamer consisting essentially of a casing 1 having a plurality ofvertical slots 2 near the bottom thereof, thesprings 3 fastened to thetop of said casing and extending downwardly over the slots 2, saidsprings being bent inwardly into inverted-L shapes at the bottom of saidcasing, the chisels 12 fastened to the said inverted-L shapes, theblocks 4 fastened to the springs 3 and extending any desired distancethrough the slots 2, the springs 5 fastened to the blocks 4 on theinside of the easing 1 and extending upwardly any desired disstance, thekey 6 located between said lastnamed springs, the pin 7 fastened intothe head of said key, the iron 8 surrounding the pin 7, the cap 9 on thepin 7 adapted to hold the part 8 in position, the eye-screw l0 tappedinto the top of the part 8, the cable 11 attached thereto, the bail 1fastened to the top of the casing 1, and the cable 1" attached thereto,all as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN (J. ADKINS.

Witnesses:

J osHUA B. IVEBs'rER, PERCY S. VVEBs'rnR.

